WO1990002658A1 - Security device - Google Patents

Security device Download PDF

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Publication number
WO1990002658A1
WO1990002658A1 PCT/GB1989/001000 GB8901000W WO9002658A1 WO 1990002658 A1 WO1990002658 A1 WO 1990002658A1 GB 8901000 W GB8901000 W GB 8901000W WO 9002658 A1 WO9002658 A1 WO 9002658A1
Authority
WO
WIPO (PCT)
Prior art keywords
image
embossed
substrate according
transitory
substrate
Prior art date
Application number
PCT/GB1989/001000
Other languages
French (fr)
Inventor
Colin Shenton
Original Assignee
The De La Rue Company Plc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10643304&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1990002658(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by The De La Rue Company Plc filed Critical The De La Rue Company Plc
Priority to BR898907637A priority Critical patent/BR8907637A/en
Priority to EP89909813A priority patent/EP0433330B2/en
Priority to DE68917144T priority patent/DE68917144T3/en
Publication of WO1990002658A1 publication Critical patent/WO1990002658A1/en
Priority to GB9104355A priority patent/GB2241668B/en
Priority to SG4794A priority patent/SG4794G/en
Priority to HK105894A priority patent/HK105894A/en

Links

Classifications

    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07DHANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • B42D25/405Marking
    • B42D25/425Marking by deformation, e.g. embossing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14Security printing
    • B41M3/148Transitory images, i.e. images only visible from certain viewing angles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29Securities; Bank notes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/324Reliefs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/36Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378Special inks
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/08Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
    • G06K19/10Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
    • G06K19/12Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being sensed by magnetic means
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07DHANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/003Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements
    • B42D2035/16

Definitions

  • SECURITY DEVICE The invention relates to security devices for use on documents of value, and in particular for use on banknotes and travellers' cheques.
  • Embossing technology for example as used in intaglio printing banknotes, has proved to be particularly useful in minimising counterfeiting relative to other printing techniques.
  • All banknotes contain some intaglio printing which may be additional to security printing applied by other techniques such as offset lithography.
  • the intaglio printing is undertaken as the last stage of printing except that numbers may subsequently be added, typically by letterpress printing.
  • a method of providing a security device on a substrate comprises embossing at least one transitory image, and a linear area which is visible when the device is examined from substantially all viewing angles.
  • a substrate carries a security device comprising in association at least one embossed transitory image, and an embossed linear area which is visible when the device is examined from substantially 30 all viewing angles.
  • transient image is one which can be seen when viewing the substrate normally but not when the substrate is viewed off normal
  • latent image is one which cannot be seen when viewing the substrate normally but which can be seen when the substrate is viewed from certain off normal angles.
  • transitory image is intended to be generic to both transient and latent images.
  • the "linear area” is an embossed area, the embossing being such that the area is viewable from substantially all viewing angles. Generally, the area will be formed by an embossed line.
  • the region of the substrate carrying the security device will be reflective although in some cases a monochrome colour could be used.
  • the reflective region is provided by a reflective material or monochromatic ink which is deposited on the substrate, for example by printing, although in some cases the substrate itself could be made of a suitable material.
  • the transitory images and linear area are embossed by an intaglio printing process with an uninked intaglio plate at the same time as intaglio printing is carried out on other regions of the substrate. This could be done using separate plates or different regions of a common plate.
  • the substrate to be embossed will normally be paper, preferably security printed paper, although plastic deformation of plastic films and paper/plastic laminates is also possible.
  • the embossed area will always, if paper, be prior printed with an ink by offset lithography. For most practical purposes this will mean depositing an area sufficient in size to contain the whole of the security device.
  • the security paper will for example be banknote or cheque quality paper which has received security indicia applied by offset lithography under normal security printing conditions.
  • the surface to be embossed should preferably i whole or part be specularly reflecting.
  • the ink will normally be metallic or have a metallic appearance, although embossing coloured or white glossy paper surfaces and non-specular paper surfaces is also possible.
  • the background metallic ink may be printed in rainbow printing fashion either by using another metallic ink or in rainbow combination with a non-specularly reflecting ink.
  • a non-specularly reflecting ink For added security the background metallic ink may be printed in rainbow printing fashion either by using another metallic ink or in rainbow combination with a non-specularly reflecting ink.
  • the metallic printing may have a coloured metallic appearance for example by using Pantone Inc. coloured metallic inks for non-durable security applications, or or durable applications the coloured metallic printings described in British Patent Application No. 8908049.3.
  • the metallic ink could be overprinted with a tinting lacquer for coloured metallic effects.
  • lithographic printing will typically be applied on one pass through the printing press.
  • Transitory image( ⁇ ) and linear areas can be used.
  • more than one transitory image may be provided and these could be the same type i.e. transient or latent or a mixture of the two.
  • the linear area could be provided completely or partly around the or each transitory image or extend through the image.
  • the linear area could be rectilinear or curved. Where more than one transitory image is provided these may be overlapped or be spaced apart.
  • these will generally be formed by at least five and normally at least ten abutting parallel embossing lines of equal spacing and depth.
  • the angles at which the engraving channels are cut, their depths, widths, spacings, and ' orientations are the conventionally variable factors which can be employed to create transient and latent effects.
  • Linear areas will preferably have a depth at least that of the shallowest transient images used in a given security device.
  • the width of the linear areas will generally be at least that of an individual transitory image line.
  • Linear areas used with transitory images may be placed at the edge of a single transitory element (or a combination cf transitory elements) , or may themselves define a shape which crosses a transitory image.
  • the linear area may be used to define one part of a security device. For example, there may be a figurehead outline design which is depicted by a linear area in the form of a perimeter line. Inside this and parallel to this' first area there may be second, third and if necessary further linear areas. The design element therefore will have the appearance of multiple parallel tracks.
  • the tracks may not necessarily be precisely parallel.
  • the tracks may gradually take on the form of an inner design element, the tracks " changing progressively from the outer to the inner.
  • Curving linear areas have the advantage that by presenting continuously varying angles of deep embossing, interference will occur on attempted photoreproduction.
  • the linear area must be visible at all angles of viewing or at the least at angles where the transitory features are not readily visible. In practice this means that the linear area should be sufficient to circumscribe or define an identifiable portion of the design element. This will preferably be in the form of a substantially continuous line although the line may be segmented.
  • linear areas may be formed .from a plurality of lines.
  • the linear area may be composed of a number of parallel lines and these may have discontinuities so that one may be interrupted while the others continue.
  • the spacing between the parallel lines may be generally set sufficiently fine so as to interfere with photoreproduction screens. Because the linear area takes up all orientations, copying by use of colour printing separation photography or scanning, and electrophotographic colour copying is substantially inhibited.
  • the spacing between the linear areas need not be exactly parallel; controlled divergence may be allowed so that the spacing and widths are wider at one part than another.
  • the inner areas may vary in direction or thickness in a regular manner while being confined within the limits of inner and outer linear areas.
  • the linear area itself may also change width in a continuous or stepped manner. Where the linear area intersects with a transitory image line there " may be a local thickening at the junctions.
  • the linear area may split into two continous lines. In the area between the split lines there may be placed further linear areas, or a transitory image rulings.
  • the linear "area” may be composed of a number of fine lines transversing the width of the linear area. These lines may have a set orientation, say with respect to one side of the security document, or they may change their angle of orientation, for example forming a radial line effect.
  • the depths of the linear areas will generally be constant within the whole device.
  • the substrate would be a document of value, for example a banknote, a cheque, a traveller's cheque, a share certificate, a stamp, plastic cash, or a credit or charge card.
  • Figures 1 to 16 comprise enlarged views of sixteen different examples of security devices.
  • banknote paper is used as a substrate.
  • ordinary paper, plastic films, metallised films or any other permanently deformable material may be used.
  • the banknote Prior to providing a security device on the banknote by embossing, the banknote will normally have been lithographically printed with security designs and the ink allowed to dry. Normally a number of different colours of ink are printed lithographically on the banknote.
  • the region of the banknote on which the security device is to be printed is printed with a metallic ink.
  • a metallic ink typically this would be provided by a silver offset lithographic ink such - as is described in our European Patent Application No.87305914.1.
  • a gold or other coloured ink it would be possible to use a gold or other coloured ink. This provides a smooth, even surface on which to carry out a subsequent embossing operation.
  • Figure 1 illustrates a final security device 10 having an elliptical background 1 formed by vertical, embossed parallel lines which contains a first (circular) transitory image 2 formed by wider, embossed parallel lines, and a partially overlapping (second) rectangular transitory image 3 formed by horizontal, embossed parallel lines.
  • the periphery of the first transitory image 2 is outlined by an embossed, closed perimeter line 4 which is continuous in nature except where it intersects the rectangle 3.
  • the width of the parallel lines and their spacing varies as can be seen in Figure 1.
  • a single embossing depth is intended with this example since variations in line width are used to differentiate between the images. However, different embossing depths could be employed alteratively or additionally.
  • the Figure 2 example has an elliptical background 1, as in Figure 1, but only a single transitory image 5 formed by horizontal, embossed lines within a circular, substantially continuous perimeter line 4.
  • the width and spacing of the parallel lines within the background and image respectively differs as shown in the drawing.
  • Figure 3 illustrates a device similar to the Figure 1 device but in which the perimeter line 4 has been omitted.
  • the images are defined solely by differences in the width and orientations of the embossed, parallel lines.
  • the elliptical background 1 contains two images.
  • the first image comprises a rectangular, transient image 3 defined by horizontally extending embossed lines and, in this case, being surrounded by a perimeter line 6 (although this is optional) and a second image comprising a continuous embossed line 7 in the form of a semi-circle which does not have its interior differentiated by a distinguishing line structure.
  • the embossed line 7 could be closed.
  • the Figure 5 example illustrates a more complex device which is again provided on an elliptical, embossed background region 1.
  • This device contains a first image 8 defined by a continuous, circular embossed line; a first transitory image 9 in the form of a triangle bearing two directions of parallel line arrangements and which is bounded by a perimeter outline 11; and a second transitory image 12 in the form of a rectangle which is not bounded by a perimeter line but which is differentiated from the background by a different orientation of the parallel, embossed lines.
  • variations in line structure or width - may be made or the structure of one element may take priority over another.
  • Figure 6 illustrates a transitory image 13 within a continuous perimeter line 14.
  • Figure 7 shows a transitory image 15 " with a continuous perimeter line 16 around the border of the image 15 and a further perimeter line 17 concentric with the line 16 but spaced from it.
  • Figure 8 is similar to Figure 7 ' but an internal structure is provided between the perimeter lines 16, 17.
  • Figure 9 is similar to Figure 6 but the perimeter line 18 is discontinuous.
  • Figure 10 illustrates a transitory image 19 positioned between two transitory images 20, 21 of a different type from the image 19, the transitory images being surrounded by a pair of discontinuous perimeter lines 22, 23.
  • Figure 11 shows two square perimeter lines 24, 25 defining between them a region containing two transitory images of different type 26, 27.
  • Figure 12 shows a transitory image 28 around which extends a spiral line 29.
  • Figure 13 illustrates a pair of transitory images 30, 31 of different type around which is provided a linear region or border defined by a set of radially outwardly extending embossed lines 32.
  • Figure 14 shows a single transitory image 33 surrounded by a -linear border region 34 formed by a set of parallel lines.
  • Figure 15 shows a transitory image 35 surrounded by a hexagonal perimeter line 36 while Figure 16 is similar to Figure 15 but the perimeter line 36 is spaced from the image 35.
  • the transitory images may comprise latent or transient- images.
  • perimeter line it more more disinctly defines a shape when the device is viewed from immediately above. Normal latent imaging techniques would not allow any image to be distinctly viewable from above as latent images are designed only to be revealed at low angle viewing.

Abstract

A substrate, such as a banknote or traveller's cheque, carries a security device comprising in association at least one embossed transitory image (1), such as a latent or transient image and an embossed linear area (4). The arrangement is such that when the embossed region of the substrate is viewed from different angles the or each image and the linear area can be visually discerned.

Description

SECURITY DEVICE The invention relates to security devices for use on documents of value, and in particular for use on banknotes and travellers' cheques.
There is a continuing need to prevent the counterfeiting of valuable documents such as banknotes, cheques, travellers cheques, share certificates, stamps, plastic cash, credit and charge cards and the like. There is also a need for there to be facile authentication of the documents.
The continuing improvement in commercial printing and photocopying technology particularly requires that more advanced security features have to be created. While machine readable features provide a useful line of defence, it is often useful to employ visual features or effects which can be noticed by a large number of people while the document is in use. This is particularly so for banknotes and other monetary instruments.
Embossing technology, for example as used in intaglio printing banknotes, has proved to be particularly useful in minimising counterfeiting relative to other printing techniques. All banknotes contain some intaglio printing which may be additional to security printing applied by other techniques such as offset lithography. In practice the intaglio printing is undertaken as the last stage of printing except that numbers may subsequently be added, typically by letterpress printing.
It is known to undertake "blind embossing" where the intaglio plate only confers a surface profile to the substrate, without any ink being applied, for example as disclosed in US-A-4715623. An intaglio imprint is obtained by pressing a suitable substrate against an engraved and inked plate so as to deform the medium into the ink-bearing recesses of the plate. The resultant impression constituting a 5 pattern formed of spaced and raised ink lines with optionally other pattern elements is characterised by superior clarity and sharpness of appearance and cannot be copied with sufficient fidelity to escape expert detection. 10 Examples of embossed, latent images are shown in US-A-4033059, US-A-4715623 and EP-A-194042. Such transitory images are generally difficult to see and are occasionally used as discrete, hidden, visual features.
While this invention will be described with 15 particular reference to banknote production it will be appreciated that other methods of embossing such as by the use of conventional embossing stamps may be used. This will have particular relevance for embossing during metallic foil stamping processes. 20 I*1 accordance with one aspect of the present invention, a method of providing a security device on a substrate comprises embossing at least one transitory image, and a linear area which is visible when the device is examined from substantially all viewing angles. 25 In accordance with a second aspect of the present invention, a substrate carries a security device comprising in association at least one embossed transitory image, and an embossed linear area which is visible when the device is examined from substantially 30 all viewing angles.
By embossing at least one transitory image and a linear area it is possible to provide a security device which is extremely difficult to copy without detection. The device provides greater visual impact, being more
35 noticeable. Such an increased perception of the device assists against counterfeiting.
In this specification, a "transient image" is one which can be seen when viewing the substrate normally but not when the substrate is viewed off normal, while a "latent image" is one which cannot be seen when viewing the substrate normally but which can be seen when the substrate is viewed from certain off normal angles. The term "transitory image" is intended to be generic to both transient and latent images. The "linear area" is an embossed area, the embossing being such that the area is viewable from substantially all viewing angles. Generally, the area will be formed by an embossed line.
Generally, the region of the substrate carrying the security device will be reflective although in some cases a monochrome colour could be used. In this case, the reflective region is provided by a reflective material or monochromatic ink which is deposited on the substrate, for example by printing, although in some cases the substrate itself could be made of a suitable material.
In the preferred embodiment the transitory images and linear area are embossed by an intaglio printing process with an uninked intaglio plate at the same time as intaglio printing is carried out on other regions of the substrate. This could be done using separate plates or different regions of a common plate.
The substrate to be embossed will normally be paper, preferably security printed paper, although plastic deformation of plastic films and paper/plastic laminates is also possible. The embossed area will always, if paper, be prior printed with an ink by offset lithography. For most practical purposes this will mean depositing an area sufficient in size to contain the whole of the security device. The security paper will for example be banknote or cheque quality paper which has received security indicia applied by offset lithography under normal security printing conditions. The surface to be embossed should preferably i whole or part be specularly reflecting. The ink will normally be metallic or have a metallic appearance, although embossing coloured or white glossy paper surfaces and non-specular paper surfaces is also possible.
For added security the background metallic ink may be printed in rainbow printing fashion either by using another metallic ink or in rainbow combination with a non-specularly reflecting ink. Thus for example there may be an area produced for embossing which has a central band of non-specular colour flanked by metallic colours.
The metallic printing may have a coloured metallic appearance for example by using Pantone Inc. coloured metallic inks for non-durable security applications, or or durable applications the coloured metallic printings described in British Patent Application No. 8908049.3. The metallic ink could be overprinted with a tinting lacquer for coloured metallic effects.
All of the "lithographic printing will typically be applied on one pass through the printing press.
Several different combinations of transitory image(ε) and linear areas can be used. For example, more than one transitory image may be provided and these could be the same type i.e. transient or latent or a mixture of the two. The linear area could be provided completely or partly around the or each transitory image or extend through the image. Furthermore, the linear area could be rectilinear or curved. Where more than one transitory image is provided these may be overlapped or be spaced apart. In the case of the or each transitory image, these will generally be formed by at least five and normally at least ten abutting parallel embossing lines of equal spacing and depth. The angles at which the engraving channels are cut, their depths, widths, spacings, and' orientations are the conventionally variable factors which can be employed to create transient and latent effects.
In practice for a given transitory design element there will generally be only one engraving depth. In the composite device there will generally only be one or two engraving depths used for the transitory images.
It is possible for the parallel rulings in the transitory images to be made to intersect to create more complicated patterns.
Linear areas will preferably have a depth at least that of the shallowest transient images used in a given security device. The width of the linear areas will generally be at least that of an individual transitory image line.
Linear areas used with transitory images may be placed at the edge of a single transitory element (or a combination cf transitory elements) , or may themselves define a shape which crosses a transitory image. The linear area may be used to define one part of a security device. For example, there may be a figurehead outline design which is depicted by a linear area in the form of a perimeter line. Inside this and parallel to this' first area there may be second, third and if necessary further linear areas. The design element therefore will have the appearance of multiple parallel tracks.
The tracks may not necessarily be precisely parallel. For example, the tracks may gradually take on the form of an inner design element, the tracks" changing progressively from the outer to the inner.
Curving linear areas have the advantage that by presenting continuously varying angles of deep embossing, interference will occur on attempted photoreproduction.
The linear area must be visible at all angles of viewing or at the least at angles where the transitory features are not readily visible. In practice this means that the linear area should be sufficient to circumscribe or define an identifiable portion of the design element. This will preferably be in the form of a substantially continuous line although the line may be segmented.
Although continuous curving embossed lines may be used satisfactorily the linear areas may be formed .from a plurality of lines.
Thus the linear area may be composed of a number of parallel lines and these may have discontinuities so that one may be interrupted while the others continue. The spacing between the parallel lines may be generally set sufficiently fine so as to interfere with photoreproduction screens. Because the linear area takes up all orientations, copying by use of colour printing separation photography or scanning, and electrophotographic colour copying is substantially inhibited.
The spacing between the linear areas need not be exactly parallel; controlled divergence may be allowed so that the spacing and widths are wider at one part than another. Alternatively the inner areas may vary in direction or thickness in a regular manner while being confined within the limits of inner and outer linear areas.
The linear area itself may also change width in a continuous or stepped manner. Where the linear area intersects with a transitory image line there "may be a local thickening at the junctions.
The linear area may split into two continous lines. In the area between the split lines there may be placed further linear areas, or a transitory image rulings.
The linear "area" may be composed of a number of fine lines transversing the width of the linear area. These lines may have a set orientation, say with respect to one side of the security document, or they may change their angle of orientation, for example forming a radial line effect.
The depths of the linear areas will generally be constant within the whole device.
Typically, the substrate would be a document of value, for example a banknote, a cheque, a traveller's cheque, a share certificate, a stamp, plastic cash, or a credit or charge card.
Some examples of methods of providing a security device according to the invention will now be described with reference to the accompanying drawings, in which:-
Figures 1 to 16 comprise enlarged views of sixteen different examples of security devices.
In these examples banknote paper is used as a substrate. However, ordinary paper, plastic films, metallised films or any other permanently deformable material may be used.
Prior to providing a security device on the banknote by embossing, the banknote will normally have been lithographically printed with security designs and the ink allowed to dry. Normally a number of different colours of ink are printed lithographically on the banknote.
Then, generally during the same printing pass, the region of the banknote on which the security device is to be printed is printed with a metallic ink. Typically this would be provided by a silver offset lithographic ink such - as is described in our European Patent Application No.87305914.1. However, it would be possible to use a gold or other coloured ink. This provides a smooth, even surface on which to carry out a subsequent embossing operation.
After the metallic ink has been applied to the banknote it is ready to be intaglio printed.
In the Figure 1 example, during the intaglio printing process two transitory images 2,3 are embossed on the metallic ink and the same intaglio plate is used for both the intaglio printing (not shown) and the embossing. It would of course be possible to perform the embossing by using a separate plate. Figure 1 illustrates a final security device 10 having an elliptical background 1 formed by vertical, embossed parallel lines which contains a first (circular) transitory image 2 formed by wider, embossed parallel lines, and a partially overlapping (second) rectangular transitory image 3 formed by horizontal, embossed parallel lines. The periphery of the first transitory image 2 is outlined by an embossed, closed perimeter line 4 which is continuous in nature except where it intersects the rectangle 3. The width of the parallel lines and their spacing varies as can be seen in Figure 1. A single embossing depth is intended with this example since variations in line width are used to differentiate between the images. However, different embossing depths could be employed alteratively or additionally.
The Figure 2 example has an elliptical background 1, as in Figure 1, but only a single transitory image 5 formed by horizontal, embossed lines within a circular, substantially continuous perimeter line 4. The width and spacing of the parallel lines within the background and image respectively differs as shown in the drawing.
Figure 3 illustrates a device similar to the Figure 1 device but in which the perimeter line 4 has been omitted. In this case, the images are defined solely by differences in the width and orientations of the embossed, parallel lines. In this case, it is preferable if at least one of the images is a transient imag . In the Figure ,4 example, the elliptical background 1 contains two images. The first image comprises a rectangular, transient image 3 defined by horizontally extending embossed lines and, in this case, being surrounded by a perimeter line 6 (although this is optional) and a second image comprising a continuous embossed line 7 in the form of a semi-circle which does not have its interior differentiated by a distinguishing line structure. In other examples, the embossed line 7 could be closed. The Figure 5 example illustrates a more complex device which is again provided on an elliptical, embossed background region 1. This device contains a first image 8 defined by a continuous, circular embossed line; a first transitory image 9 in the form of a triangle bearing two directions of parallel line arrangements and which is bounded by a perimeter outline 11; and a second transitory image 12 in the form of a rectangle which is not bounded by a perimeter line but which is differentiated from the background by a different orientation of the parallel, embossed lines. Where the various elements intersect, variations in line structure or width -may be made or the structure of one element may take priority over another.
Figure 6 illustrates a transitory image 13 within a continuous perimeter line 14. Figure 7 shows a transitory image 15" with a continuous perimeter line 16 around the border of the image 15 and a further perimeter line 17 concentric with the line 16 but spaced from it. Figure 8 is similar to Figure 7 'but an internal structure is provided between the perimeter lines 16, 17. Figure 9 is similar to Figure 6 but the perimeter line 18 is discontinuous.
Figure 10 illustrates a transitory image 19 positioned between two transitory images 20, 21 of a different type from the image 19, the transitory images being surrounded by a pair of discontinuous perimeter lines 22, 23.
Figure 11 shows two square perimeter lines 24, 25 defining between them a region containing two transitory images of different type 26, 27.
Figure 12 shows a transitory image 28 around which extends a spiral line 29.
Figure 13 illustrates a pair of transitory images 30, 31 of different type around which is provided a linear region or border defined by a set of radially outwardly extending embossed lines 32.
Figure 14 shows a single transitory image 33 surrounded by a -linear border region 34 formed by a set of parallel lines.
Figure 15 shows a transitory image 35 surrounded by a hexagonal perimeter line 36 while Figure 16 is similar to Figure 15 but the perimeter line 36 is spaced from the image 35. In all these examples, except where stated otherwise, the transitory images may comprise latent or transient- images.
It will be appreciated that the lighting conditions can alter the visual appearance. For example low angle lighting from a point will cause shadows. The appearance changes because of different degrees of reflectivity, masking and shading. Sometimes a given transient image will be darker than the other areas, sometimes lighter or sometimes it will be difficult to distinguish having little contrast with the surroundings.-
The benefit of the perimeter line is that it more more disinctly defines a shape when the device is viewed from immediately above. Normal latent imaging techniques would not allow any image to be distinctly viewable from above as latent images are designed only to be revealed at low angle viewing.

Claims

1. A method of providing a security device on a region of a substrate, the method comprising embossing at least one transitory image, and a linear area which is visible" when the device is examined from substantially all viewing angles.
2. A method according to claim 2, wherein the at least one image and the linear area are blind embossed. 3. A substrate carrying a security device comprising in association at least one embossed transitory image, and an embossed linear area which is visible when the device . is examined from substantially all viewing angles.
4. A substrate according to claim 3, wherein the linear area borders the at least one transitory image.
5. A substrate according to claim 3, wherein the linear area is continuous.
6. A substrate according to claim 3, wherein the linear area is curved. o ! • > A substrate according to claim 3, wherein the linear area is defined by a number of substantially parallel embossed lines.
8. A substrate according to claim 7, wherein the lines extend transversely to the length of the linear area. 5 9. A substrate according to claim 3, wherein the thickness of the linear area varies along its length.
10. - A substrate according to claim 3, comprising a number of embossed linear areas.
11. ' A substrate according to claim 3, wherein the linear 0 . area is embossed to a depth at least equal to the shallowest depth to which the at least one transitory image is embossed.
12. A substrate according to claim 3, wherein the at least one transitory image is a transient image. 5 13. A substrate according to claim 3, wherein the security device includes a transient image and a latent image.
14. A substrate according to claim images are superimposed on each other.
15. A substrate according to claim substrate is specularly reflecting.
16. A substrate according to claim
Figure imgf000015_0001
substrate carries a metallic ink.
PCT/GB1989/001000 1988-09-09 1989-08-29 Security device WO1990002658A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BR898907637A BR8907637A (en) 1988-09-09 1989-08-29 PROCESS OF PROVIDING A SAFETY DEVICE IN A REGION OF A SUBSTRATE, AND SUBSTRATE THAT HAS A SAFETY DEVICE
EP89909813A EP0433330B2 (en) 1988-09-09 1989-08-29 Security device
DE68917144T DE68917144T3 (en) 1988-09-09 1989-08-29 SAFETY ARRANGEMENT.
GB9104355A GB2241668B (en) 1988-09-09 1991-03-01 Security device
SG4794A SG4794G (en) 1988-09-09 1994-01-15 Security device.
HK105894A HK105894A (en) 1988-09-09 1994-10-06 Security device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8821150.3 1988-09-09
GB888821150A GB8821150D0 (en) 1988-09-09 1988-09-09 Security device

Publications (1)

Publication Number Publication Date
WO1990002658A1 true WO1990002658A1 (en) 1990-03-22

Family

ID=10643304

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1989/001000 WO1990002658A1 (en) 1988-09-09 1989-08-29 Security device

Country Status (8)

Country Link
EP (1) EP0433330B2 (en)
AT (1) ATE109076T1 (en)
BR (1) BR8907637A (en)
CA (1) CA1335509C (en)
DE (1) DE68917144T3 (en)
GB (2) GB8821150D0 (en)
HK (1) HK105894A (en)
WO (1) WO1990002658A1 (en)

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WO1993023251A1 (en) * 1992-05-11 1993-11-25 Avery Dennison Corporation Method of enhancing the visibility of diffraction pattern surface embossment
WO1994000298A1 (en) * 1992-06-23 1994-01-06 Thomas De La Rue & Company Limited Security document printing
EP0581414A1 (en) * 1992-06-04 1994-02-02 Director-General, Printing Bureau, Ministry Of Finance, Japan Anti-counterfeit latent image formation object for bills, credit cards, etc. and method for making the same
WO1994029119A1 (en) * 1993-06-08 1994-12-22 Reserve Bank Of Australia Embossing of banknotes or the like with security devices
WO1996007547A1 (en) * 1994-09-09 1996-03-14 Leonhard Kurz Gmbh & Co. Visually identifiable optical element
EP0555442B1 (en) * 1991-08-29 1996-12-11 Canadian Bank Note Company, Ltd. Security document with coating and method for making the same
WO1998047715A1 (en) * 1997-04-18 1998-10-29 De La Rue International Limited Transitory image structure
AT404696B (en) * 1994-03-16 1999-01-25 Landis & Gyr Business Support Information medium with heat-sensitive lattice structures
US5871615A (en) * 1994-06-14 1999-02-16 The Wiggins Teape Group Limited Method for the manufacture of security paper
WO2001000426A1 (en) * 1999-06-25 2001-01-04 Note Printing Australia Limited Improved security documents
US6176522B1 (en) * 1993-06-08 2001-01-23 Securency Pty Ltd Embossing of bank notes or the like with security devices
US6226127B1 (en) 1996-11-07 2001-05-01 Fryco Limited Optical images
US6316079B1 (en) * 1997-04-15 2001-11-13 4P Folie Forchheim Gmbh Plastic film
WO2002024470A1 (en) * 2000-09-25 2002-03-28 The Singapore Mint Multiple image surface
EP1194302A1 (en) * 1999-07-07 2002-04-10 Note Printing Australia Limited Security document with raised intaglio printed image
EP0801604B1 (en) * 1995-11-03 2003-09-24 Giesecke & Devrient GmbH Data carrier with an optically variable element
WO2004001130A1 (en) * 2002-06-25 2003-12-31 De La Rue International Limited Fibrous substrates
WO2005080089A1 (en) 2004-02-20 2005-09-01 De La Rue International Limited Security device
US7029733B2 (en) 1997-01-29 2006-04-18 Securency Pty Ltd Printed matter producing reflective intaglio effect
WO2007140486A3 (en) * 2006-05-31 2008-04-10 Cabot Corp Reflective features with co-planar elements and processes for making them
US7686341B2 (en) 2000-09-08 2010-03-30 Giesecke & Devrient Gmbh Data carrier, method for the production thereof and gravure printing plate
WO2011004190A2 (en) 2009-07-07 2011-01-13 De La Rue International Limited Method of forming a photonic crystal material
EP2384898A1 (en) * 2010-05-06 2011-11-09 Giesecke & Devrient GmbH Safety element for security papers, valuable documents or the like
US8883273B2 (en) 2006-08-10 2014-11-11 De La Rue International Limited Photonic crystal security device
US8927072B2 (en) 2006-08-10 2015-01-06 De La Rue International Limited Photonic crystal security device
US9272564B2 (en) 2007-10-19 2016-03-01 De La Rue International Limited Photonic crystal security device and method
EP2599637B1 (en) 2011-11-30 2016-06-29 Giesecke & Devrient GmbH Data carrier with tactile security feature
US9533523B2 (en) 2006-05-31 2017-01-03 Sicpa Holding Sa Reflective features with co-planar elements and processes for making them

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GB2360250A (en) * 2000-03-17 2001-09-19 Arc Screen Print Ltd Printing whereby different images are discernable at different angles of view
GB0401370D0 (en) 2004-01-21 2004-02-25 Rue De Int Ltd Security device
CN101746209B (en) * 2008-12-17 2013-04-17 中国人民银行印制科学技术研究所 Anti-counterfeiting element with light variation security pattern
DE102016014205A1 (en) * 2016-11-29 2018-05-30 Giesecke+Devrient Currency Technology Gmbh Screen printing of effect colors on value documents
DE102017005192A1 (en) 2017-05-31 2018-12-06 Giesecke+Devrient Currency Technology Gmbh Security element with two tilting effects

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Cited By (43)

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Publication number Priority date Publication date Assignee Title
EP0555442B1 (en) * 1991-08-29 1996-12-11 Canadian Bank Note Company, Ltd. Security document with coating and method for making the same
US5549774A (en) * 1992-05-11 1996-08-27 Avery Dennison Corporation Method of enhancing the visibility of diffraction pattern surface embossment
WO1993023251A1 (en) * 1992-05-11 1993-11-25 Avery Dennison Corporation Method of enhancing the visibility of diffraction pattern surface embossment
AU669698B2 (en) * 1992-06-04 1996-06-20 National Printing Bureau, Incorporated Administrative Agency Anti-counterfeit latent image formation object for bills, credit cards, etc. and method for making the same
US5437897A (en) * 1992-06-04 1995-08-01 Director-General, Printing Bureau, Ministry Of Finance, Japan Anti-counterfeit latent image formation object for bills, credit cards, etc. and method for making the same
US5582103A (en) * 1992-06-04 1996-12-10 Director-General, Printing Bureau, Ministry Of Finance, Japan Method for making an anti-counterfeit latent image formation object for bills, credit cards, etc.
EP0581414A1 (en) * 1992-06-04 1994-02-02 Director-General, Printing Bureau, Ministry Of Finance, Japan Anti-counterfeit latent image formation object for bills, credit cards, etc. and method for making the same
WO1994000298A1 (en) * 1992-06-23 1994-01-06 Thomas De La Rue & Company Limited Security document printing
US6176522B1 (en) * 1993-06-08 2001-01-23 Securency Pty Ltd Embossing of bank notes or the like with security devices
US5915731A (en) * 1993-06-08 1999-06-29 Reserve Bank Of Australia Embossing of banknotes or the like with security devices
WO1994029119A1 (en) * 1993-06-08 1994-12-22 Reserve Bank Of Australia Embossing of banknotes or the like with security devices
CN1048215C (en) * 1993-06-08 2000-01-12 澳大利亚储备银行 Embossing of banknotes or the like with security devices
AT404696B (en) * 1994-03-16 1999-01-25 Landis & Gyr Business Support Information medium with heat-sensitive lattice structures
US5871615A (en) * 1994-06-14 1999-02-16 The Wiggins Teape Group Limited Method for the manufacture of security paper
WO1996007547A1 (en) * 1994-09-09 1996-03-14 Leonhard Kurz Gmbh & Co. Visually identifiable optical element
AU685318B2 (en) * 1994-09-09 1998-01-15 Deutsche Bundesbank Visually identifiable optical element
CN1054574C (en) * 1994-09-09 2000-07-19 雷恩哈德库兹有限公司 Visually identifiable optical element
EP0801604B1 (en) * 1995-11-03 2003-09-24 Giesecke & Devrient GmbH Data carrier with an optically variable element
AP1082A (en) * 1996-11-07 2002-07-05 Fryco Ltd Optical images.
US6226127B1 (en) 1996-11-07 2001-05-01 Fryco Limited Optical images
US7029733B2 (en) 1997-01-29 2006-04-18 Securency Pty Ltd Printed matter producing reflective intaglio effect
US6316079B1 (en) * 1997-04-15 2001-11-13 4P Folie Forchheim Gmbh Plastic film
WO1998047715A1 (en) * 1997-04-18 1998-10-29 De La Rue International Limited Transitory image structure
WO2001000426A1 (en) * 1999-06-25 2001-01-04 Note Printing Australia Limited Improved security documents
US6659508B1 (en) 1999-06-25 2003-12-09 Note Printing Australia Limited Security documents
EP1194302A1 (en) * 1999-07-07 2002-04-10 Note Printing Australia Limited Security document with raised intaglio printed image
EP1194302A4 (en) * 1999-07-07 2004-05-12 Note Printing Au Ltd Security document with raised intaglio printed image
US6905755B1 (en) 1999-07-07 2005-06-14 Note Printing Australia Limited Security document with raised intaglio printed image
US7686341B2 (en) 2000-09-08 2010-03-30 Giesecke & Devrient Gmbh Data carrier, method for the production thereof and gravure printing plate
WO2002024470A1 (en) * 2000-09-25 2002-03-28 The Singapore Mint Multiple image surface
WO2004001130A1 (en) * 2002-06-25 2003-12-31 De La Rue International Limited Fibrous substrates
WO2005080089A1 (en) 2004-02-20 2005-09-01 De La Rue International Limited Security device
CN100453338C (en) * 2004-02-20 2009-01-21 德拉鲁国际公司 Security device
WO2007140486A3 (en) * 2006-05-31 2008-04-10 Cabot Corp Reflective features with co-planar elements and processes for making them
US9533523B2 (en) 2006-05-31 2017-01-03 Sicpa Holding Sa Reflective features with co-planar elements and processes for making them
US8883273B2 (en) 2006-08-10 2014-11-11 De La Rue International Limited Photonic crystal security device
US8927072B2 (en) 2006-08-10 2015-01-06 De La Rue International Limited Photonic crystal security device
US9272564B2 (en) 2007-10-19 2016-03-01 De La Rue International Limited Photonic crystal security device and method
WO2011004190A2 (en) 2009-07-07 2011-01-13 De La Rue International Limited Method of forming a photonic crystal material
US10076866B2 (en) 2009-07-07 2018-09-18 De La Rue Internatonal Limited Method of forming a photonic crystal material
EP2384898A1 (en) * 2010-05-06 2011-11-09 Giesecke & Devrient GmbH Safety element for security papers, valuable documents or the like
EP2599637B1 (en) 2011-11-30 2016-06-29 Giesecke & Devrient GmbH Data carrier with tactile security feature
EP2599637B2 (en) 2011-11-30 2019-11-06 Giesecke+Devrient Currency Technology GmbH Data carrier with tactile security feature

Also Published As

Publication number Publication date
CA1335509C (en) 1995-05-09
ATE109076T1 (en) 1994-08-15
GB2241668A (en) 1991-09-11
DE68917144T2 (en) 1994-12-08
HK105894A (en) 1994-10-14
EP0433330A1 (en) 1991-06-26
DE68917144T3 (en) 1997-08-28
BR8907637A (en) 1991-05-14
DE68917144D1 (en) 1994-09-01
GB9104355D0 (en) 1991-05-15
GB2241668B (en) 1992-09-02
GB8821150D0 (en) 1988-10-12
EP0433330B2 (en) 1997-06-11
EP0433330B1 (en) 1994-07-27

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